Automatic door-control device for elevators



June 11, 1929. 1 T. ESKILSSON AUTOMATIC noon 00111 1101; DEVICE FOR ELEVATORS Filed June 29, 1 926 5 Sheets-Sheet 1 I V? 1a 1 A TTORNE Y 1 June 11, 1929.

r. ESKILSSON 1,717,197

AUTOMATIC DOOR CONTROL DEVICE FOR ELEVATORS Filed June 29, 1926' 5 Sheets-Sheet 2 6N) ATTORNEY June 11, 1929.

T. ESKJLSSON AUTOMATIC DOOR CONTROL DEVICE FOR ELEVATORS Filed June 29, 1926 5 Sheets-Sheet 3 Q IN VEN TOR &- A TTORNE Y June 1929. T. ESKILSSON 1,717,197

AUTOMATIC DOOR CONTROL DEVICE FOR ELEVATORS Filed June 29, 1926 5 Sheets-Sheet 4 ENTOR z/f 4 ATTORNEY June 11, 1929.

T. ESKILSSON AUTOMATIC DOOR CONTROL DEVICE FOR ELEVATORS Filed June 6 5 Sheets-Sheet 5 Patented June- 11, 1929.

UNITED STATES j nnit?- THEODORE EsKILssoN, or-nnw ,YOR'K,'N.;Y.'

AUTOMATIC DOOR-CONTROL DEVICE FOR ELEVATORS.

Application filed June 29,

This invention relates to elevators and like structures and more particularly to safety devices for such elevators and like structures, and aims to eliminatethe danger accompanying the operationthereof, as by opening the shaftway enclosure doors, when such elevators are not at a certain level with respect to the landings for which service is desired, and as by starting the elevator before the doors of said landings have been properly closed. I

It is an object of the invention to provide elevators and like structures with safety devices which are positive in action and automatic in operation; which operate in conjunction with the standard controllers of the elevators and like structures; which are easily installable on any type of elevator andlike structure; which require but little space in theelevator cars and on the'landing doors of the shaftways; which shall prevent starting the elevatorsand like structures while the'shaftway landing doors are open; which shall prevent opening such door While the elevators are in motion, permitting such opening only when the elevators are stopped at a certain position or level with respect to the landings of such doors; and whichshall provide all safety means required by law, both in theoperation of the elevators and in the operation of their enclosure doors.

Other objects and advantages of the invention will appear in the specification which is descriptive of an illustrative embodiment of the invention shown in the accompanying drawings, to which illustrative embodiment and the description thereof I'do not limit myself since the'same may be varied without departing from the spirit of my invention.

Before describing the invcntionin accordance with the illustrated example, it is believed best to point out briefly some of the dangers and hazards which are present in the operation of elevators and like structures, and which my invention eliminates.

Elevators and like structures depend for their operation upon the human element, that is, on the care and skill of the operators of the elevators who, no matter how careful they may be, are always apt to err and open the shaftway' landing enclosure doors, for

which service is desired, when the elevators are not brought entirely to a stop or when they are stopped at an olf-level with respect to the landings of such enclosure doors.

1926. S eriaLNo. 119,269.

Many times,when such doors are so opened,

injury results to the incoming and outgoing passengers, for they may fall when getting in or out of the elevators, beingunawareof the step-up or clown'whi'ch the elevators may present When-not atv a' proper level with respect to the floor of the landings. But the moreserious dangers and hazards are those when such operators start the elevators before the landing 'doors have beenproperly closed leaving such doors open to afford a drop to unaware persons on the landings who might venture near such open doors and even to persons on the elevators who may attempt to get off the elevators after the same have been started, misledby the open'doors.

Other dangers afforded by not closing such doors are those af allowing possible fires starting on anyfloors to find their way into the elevator shaftways through the open doors, to the damage of the cables of the elcvatorsendangering the safety of the same; i

and also affording a source of communication of flames to the other floors communicating with the shaftways endangering all the floors of the building in which the fire occurs, and which could have been preventedif all the doors of the shaftways are properly closed. The invention purposes to eliminate all of the above pointed out and all of the other dangers present in the operation of elevators;

and also purposes to provide all the means necessary to comply with the regulations and laws imposed by the different municipalities and States, since all of such regulations and laws aim to prevent the dangers above pointed out. w I

In the accompanying specification I shall describe, and in'the annexed drawings show, an illustrative embodiment of the invention; and it is here again pointed out that the in vention is not limited to the specific'form herein shown and described.

Referring to the drawmgsherem, in which I have illustrated the aforesaid illustrative embodiment of the inventionz Figure 1 is a side elevational view showing an embodiment of the invention applied to an elevator and associated with the cont-roller of such elevator.

Figure 2 is an enlarged view of a portion of the embodiment shown in Figure 1 and taken on line 2-2 of that figure;

Figure 3 shows a door-locking mechanism associated with each shaftway enclosure door which is engaged by the device carried on the elevator as shown in Figure 1, the showing being in side elevational view.-

l ig. t is a transverse sectional view taken on line H of Fig. 3.

Figure 5 is a figure similar to Figure 2 but showing the parts thereof in a different or disengaged position.

c Figure (5 is a view similar to Figure 3, but showing the parts in the position corresponding to the position shown in Figure 5.

Figure 7 is a View taken on line 7-.7 01 Fig. 6 showing, more clearly, the top view of the door locking mechanism.

Figure 8 shows a portion of a door-locking bar which co-engagc-s with the door locking mechanism.

V Figure 9 is tit-perspective view of a bar and plate which engage with the mechanism carried by the elevator.

Figure 10 shows a portion of the elevator controller-ho and parts of the device to'he hereinafter referred to.

Figure 11 shows a key-locking mechanism employed on each enclosure door.

Figure 12 is a sectional view of Figure 11 and taken. on line 12--12 in Figure 11.

Figure 13 is a cross-sectional view of a portion of the devicetaken on line 13--13 in Figure 1. I

Figure 14 shows a sectional view of a portion ot the device taken on line l41 l in Figure 18.

Figure l5is a diagrammatical view of the electrical circuit of the illustrative embodiment of the invention.

In the drawings, in the elevator and adj acent the elevator controller 21, I mount the electrical apparatus of my device which will be hereinafter described more in detail. Through the floor 22 of the elevator extends a slidahle rod 23 formed at its lower end with a head 24; to which is secured a pin 25. At the lower face of the elevator floor 22 I secure a bracket 25 formed. intermediate its ends, with a hearing 26, and at its lower end'are secured by means of a pivot pin links 28 and 29. Each of these links is formed at its free end with an oblong slot 30,- the axis of one oi the slots being disposed at an angle to the axis of the other slot. The slot 30 of thelink 29 accommodates the pin 25 out the slidable rod and the slot of the link 28 accommodates a pin 31, which pin is secured to one end of a stub shaft which stub shaft is slidably arranged in the hearing 26 of the bracket 25. At the opposite end of the said stub shaft 32 I secure, by any approved means,

32, and likewise the moven'ient ot the stub shaft is transmitted to the slidahle rod 28.

Adjacent each landing of the shattuuiy in which the elevator op rates, and preterahly near the lower end of the shaltway enclosure doors 4 0, on the wall of the shattway, I attach in any approved manner a box or casing 41 formed iu'the 'i'ront face thereof with an opening d2, in which moves a cam plate (l3, preferably integral with a bar ts the lower end oi which is pivoted as at 15 to l'iinge lugs 46 formed in the casin ll. The upper or free end of the bar is formed with an angularly disposed slotw-LZ', in'which is ,actuated a pin d8, the-latter being secured to a toothed member 49 which is also pivoted to the casing 41 by means oihinge lugs5Q and pin 51. The toothed member l9,interme 'itc its ends, is formed with a series of teeth 52, and at its free end is formed with an enlarged portion in the lower end of which also termed an oval slot 54 disposed an angle to the longitudinal axis of the toothed memher l9. Within the casing 4-1 and approiiimately in its center, is pivoted by means of a pin 55 a weight 56, which is pivoted. that it normally moves under its own gravity to one side as shown in Figure 6. Said weight 56, at its upper end, carries a pin 57 which is accommodated in the slot 54 of the toothed member 49, and by means of this weight 56 and the pin 57 the toothed member 49 is always urged to move upwardly. it is of course, understood that any other means could be employed for urging the toothed member 1-9 upwardly.

On each door l0 I mount, by means or" a guide 60 which is secured to the door by screws or other similar devices 61, a slidahle locking bar 62 formed at its lower end with a projection 63 which projection is adapted to engage any of the teeth 52 of the toothed member 4L9. To the said locking bar adjacent the projection 63 is secured, by any approved means such as rivets (i i, an L-memher 65, oneleg of which disposed substantially at right angles to the longitudinal axis of the locking bar 62 and formed with a tongue portion 66 projecting rearwardly and presenting a curved or cammed'face so as to smoothly engage with the upper end of: the pivoted bar 4H. It will thus be seen that by exerting a pressure on the cam plate 413 the pivoted bar lat is swung rearwardly and the pin -18 is pulled downwardly through the medium of the oblong slot 47, and thus disengaging the.

I toothed member d9 from the lock bar 62 to permit an opening of the door lit). See Figures 2, 3 and 4:.

I have shown in Figures 2, 3 and d the plate 34: in engagement with the cam plate 43, and the pivoted bar 44 disposedsuhstantially vertically at which position the pin 48 together with the toothed member 49 have been moved, to such a position that the teeth 53 are free from the projection 63 of the slide bar 62. But it will be noted in Figure *1 that ill) upon opening the door and moving the tougre niitting at the same time, through the medium ofthe stub shaft 32 and the links 28and 29, the slidable rod '23 to move further upwardly under the action of a spring as shown in Figure 1 to which a more specific reference is to be had later. It will also be noted that the pivoted bar 44, when the plate 34 pushes against the cam plate 13, moves only to approximately that position shown in Figure 2 because the lower leg of the L-member 65 prevents the saidpivotbarAA from moving any further than the position shown iii-Figure 2'; but upon opening the doorlO, the lug bar 62 together with the L-1ne1nber 65 is carried away from its normal position and'the pivoted bar 4:418 permitted, under the pressure of the spring 70, to fi irther move approximately to the'position shown in Figure 4..

F or the purpose of emergency and to comply with the different laws enacted by State and city legislative bodies, the fOllOWlng-HT- rangement is. made: The lug bar 62 isconnected by means of a rod with a key operated lug mechanism 76, and the rod 75 is guided by a guiding clamp 77 secured in any approved. meansto the door 40. Said rod 75 is preferably enveloped by a spring78 which'is interposed between a guiding clamp 77 and the upper endof the lug bar 62, so

that the said lug bar 62 will be constantly urged downwardly. It- 1s, of course, under- A stood that any other means could be used besides the spring or the same could be entirely eliminated. because the bar 62, if free of friction, will move downwardly under its'own gravity. The lock mechanism 7 6 is shown in detail in Figures 11 and '12, to which reference is now made; and it comprises a casing 80, preferably having a removable cover 81 and formed with openings 82 and 83 in the sides thereof. Through the opening 82 passes a rod 84 one end of which 1s p votally connect-odes at 81'), with a manually operated releasing memberSG mounted on the door 10', and the other end of which is guid d in a guide clamp 88 securedto the lock casing 80. Said other end of rod 84 is formed with a head 87. Between the guiding clamp 88 and the head 87 is arranged a collar 89, the bore of which is formed with flaring walls 90,- as shown in Figure 11, and this collar forms a part of the rockable actuator 91 mounted to rock on the pivot 92; and carrying,substantially at right angles to the collar 89, a second collar 93, the bore of which is also formed with flaring walls 9 1. The rockable actuator 91 is also formed below the pivot 92 with a cam portion 95, having a: cam face 96 which I normally tears against the cam face 97 of a 'member 91; and then swing 'inQmber 86.

rocks, on the key-operated cam 98, having a slot 99 to receive a key or like device passed through a slot in the removable cover 81 of the casing 80. From thedescription of this arrangement it will be seen that in case of emergency the operator, operating the elevator, may

open the door 40 independently of the doorlocking mechanism above referredto and ac-' tuated by plate 34. Assuming that, for any reasons whatever, the operator desires to open-the door 40 independently of the aforedescribed doo rrlockin g mechanism, he inserts a key, which is carried by him, intojthe' slot 99 of the cam actuator 98 and turns that cam into a position substantially at right angles to the position shown in Figure 11 or into a position where the straight portion of the cam face 9? lies substantially parallel witlr the cam face 96 of thefrockable actuating s the manually actuated releasing member 86 in the direc-, tion n wlnch the rod 84 is pulled to the right in g the door the operator moves the releasing member 86 in the opposite direction and places the rockable' actuating member 91 in its normal position as shown in Figure 11, and turns the key actuated cam 98 to tho position shown in Figure'll to lock the. rockable actuator 91 against movement. lVhen the operator moves the bar 62 downwardly the toothed member 49 is pushed downwardly and thereby the parts of, the door lock mechanism are returned to the position shown in l igures 2 and 3.

' i s a further emergency and to permit the door tobe opened from. the outside, I, ar range at the upper end of the rod 7 5 a sleeve 105 formed at its upper. end with a flange 106, which sleeve passes through or bears against the walls 94 of the collar 93 and is guided at its lower end by means of a guide clamp 107 secured to the inner face of the lock casing 80. The rod 75 carries at its upper end a which normally registers with a key slot 110 extending to the outer face of the enclosure door 40. The head 108 may be screwed or otherwisely secured tothe rod 75 and is formed with an annular flange 111;.which normally bears against the upper face of the flange 106 of'the sleeve 105. Preferably,but not necessarily, a collar 112 is secured by means of a screw or rivet 113 to the sleeve 105 sons to regulate its longitudinal movement of the lock bar 62. From the above-description it will be seen that I may open the door $6 from the landing by inserting a key through the slot and turning the same within the oblon slot 107 in the head 108, causing a pull up war dly on the head 108, the rod 7 5 and the lug bar 62, to disengage the sameirom the toothed member 19. It will be noted from the above description. that the door 40, may

be opened manually by the operator without the aid of any pressure on the plate 13 or it may be opened from the landing also without the aid of any pressure on the plate 13.

' The device for actuating the plate 3 1 and the mechanism for locking the doors are carried on the elevator as above pointed out, and principally comprising; a weight 120, formed with a projection 12-1, suspended by means 01. flexible element or chain 122 from the elevator controller handle 123. Preferably, the flexible element 122 is guided over sheaves 12 1 and 125 so that the weight 120.

may reciprocate up and down when the bandle 123 rocked on its pivot 126. In the immediate vicinity of the weight 120 are arranged electro-magnets and 131', each operating the respective plungers 132 and 133; the plunger 132 being connected with the slidable rod 23, and the plunger 133 being connected with a dog 135 pivoted at 136. The plunger 132 in addition to the slidable rod 23 carries a standard 138, to which is secured a circuit closer 139 operating between the electrical contacts MO and 1&1, and which contacts it normally bridges. The dog 135, which is secured to the plunger 133,-is formed at its rear end with an eye 1 15, to which is secured one end of the spring 1416. whose opposite end is secured to an eye 147 carried by the frame of the magnet 131.

The spring 11 :6 urges the doc; 135 in the dimoved away from its lowermost position,

engages or contacts with the contact 155, which contact is the terminal 01 one of the leads of the coil 01' the magnet 130. To the frame mounting the magnet 130 or to any other support is secured a guide rod 160, which extends through the bore of the collar 153; and between the collar 153 and the frame mounting); the magnet 130 is interposed a spring 161. the latter being" adapted to urge the circuit breaker 151 in contact with they terminal 155.

Before describing the operatlon ot the magnets andtheir associated parts, a description 01 the circuit of said magnets will be first entered into. Reference is now had to Figure 15 wherein said circuits are diagrammatically illustrated and which are connected to a. source of electrical supply not shown) by means of conductors 170 and 171. The circuit of i'i'iagnet 130 comprises a conductor 172, connected to the conductor 171 and connected with one end of the coil of the magnet 130, as at 173. The other end of the coil of the magnet .130 is connected to tl e terminal as above described which is engaged by the contact blade 15% of the circuit breaker 151, and at a spaced point from the terminal'155, a second terminal 17st is arranged to which is connected the conductor 175, the latter being connected as at 176 to the opposite side 01 the source of elect-ri cal supply to which the conductor tends. Here it'will be seen that the current from the source of electrical supply when the blade 15 1 of the circuit breaker 151 bridges the terminals 155 and 174; passes from the conductor 171 through conductor 172, through the coil of the magnet 130, to the terminal 155, through the blade. 154-, to the terminal '17 l and through the conductor 175, thence'ba ck to the conductor 1 6 which is connected with the source of electrical supply.

The circuit of the magnet 131 is the following: Conductor 180 is connected to the conductor 171, and to the contact 1 11 a second conductor 181 is connected to one end O'l coil of the magnet 131 and to the contact 1 10. To the opposite end of the coil of the magnet 131 is connected a conductor 182, which in turn is connected with the terminal 183 on the switch box 18-1- of the elevator controller. The terminal 183 is disposed at one side of the longitudinal medial plane of the switch box 18 1, and on the other side 015 the said longitudinal medial plane of the box 181 is also arranged another terminal which is connected to the conductor 182 by means of a conductor 186. At spaced points from the terminals 183 and 185 are also arranged. on the switch box of the elevator controller terminals 187 and 188 which, by means of the respective conductors 189 and 196, are connected to theconductor 191 which is connected with the other side of the source of electrical supply or to. the conductor 170. The handle 123 of the elevator controller carries a bridging plate 193 whichinay be insulated from the handle and which is adapted to bridge either the contacts 183 and 187 or the contacts 185 and 188, as the case maybe, when the said. handle 123 is moved from or to its neutral position to make or break the circuit or circuits to the motor driving the elevator, which circuit or circuits are frac-- tionally indicated by the contacts and conductors .196. A dc-scrlption of the circuit or circuits of the motor driving the elevator is not necessary since the standard circuit the handle 123 to its neutral positionas shown in Figure 1, and in so doin allo'wsthe weight 120 to move downwardly opening the circuit breaker 151, and breaking the'circuit of the magnet 130.

door for which service is desired and also stopped in that positionin which the plate 34 is engaged with the cam plate 43; the spring 70 is allowed, since the magnet 130 is now deenergized, to push the plunger 132, together with the slidable rod 23, upwardly, thereby causing the links 28 and 29to rock 011 their pivot 27 and push the stub shaft 32 against the cam plate 43, forcing thelat-ter rearwardly until the pivoted bar 44' is stopped,

from further movement by the L'-member and when the L-mem'ber 65 is Withdrawn from the position shown in Figure 3 the spring is then permitted to further push the cam plate 43 and the rod 44 further rearwardlyuntil the rod 44.occupies the position shown in Figure 4. Incidentally, in so doing,'the plunger 132 together withthe stand ard 138 and the circuit closer 139 pushfurther upwardly until the said circuit closer 139 is disengaged from the contacts 140 and 141,

breaking the circuit of the magnet 131'. WVhen placed in the path of movement of the projection 121 and thereby preventing an opera' tion of thecontroller handle 123 while the shattway door is opened, and consequently reventin a startin ottheelevator while the said door is open. When the door just opened is closed the rounded face of the tongue 66 ot' the L-member 65 engages with and forces the pivoted bar 44 in the position shown in Figure 2, thereby projecting the cam plate 43 outwardly and forcing'the plate '3 34 rearwardly, which in turn. through the med ium of the stub shaft 32 and the links 28 and 29, causes the slidabl'e rod 23 tomove clownwardly against the action of the sprlng 70 and in so doing causes the circuit closer 139 to bridge the space between the contacts 140 and 141 and close the circuit of the magnet 131. Here it will be noted, as it appears in Figure 1, that the weight 120, when in its lowermost;

position prevents the projection 121 at some ornoticeable distance from the lower end of the dog 135 so as to permit a slight movement of the handle 123, whereby anyone of the sets Assumingthat the elevator has been stopped ad acent a shattway enclosure ofterminals 185 and 188 or 183 and 18 7 may be bridged by, thebridg'i'ng plate 193 before the dog 135is moved out'o'ift'he path of moveinen'tofthe projection 121, asshown in dotted lines in Figure 1. Assuming that the door is closed and that, the circuitcloser139 is now bridging theicont'act members 140 and .141,

and that the operator 'inoves the handle 123 in one direction or the other,-upon so doing th e'circ'u'it'of the magnet 131is closed there- 'byenergizing the said magnet 131 and can -I mg the plunger 133 to move outwardly and rock,on the pivot 136, the dog 135 so as to move away from the projection 121 its lower end andpermit the handle 123 to be moved past any set of the contacts 186 188 or 1S318 7f. ,Attention is here called that the circuit of the magnet 133 is interrupted by the circuit closer 139 and by thevbrid-ging plate 193, 139'is not bridging the contacts 140 and 141; that is, when the door 40 is open, a movement of the'handle 123 in one direction or the other will not'closethc circuit to the magnet 131 because the same isbroke'n by the circuit closer 13. In order that the circuit of this magnet -131 may be closed,ith'e door 40 must first be closed, othe rwise the circuit closer 139 will notbridg ethe contacts 140 and 141. Therefore when the door'40 is closed and the circuit closer 139 bridges the contacts 140 and 141,"current will flow when the blade 193 bridges any of the sensor contacts 183-1 87, 185-188, in the followiii g manner :"Frtnn the source of ele trical supply, through'th'e conducto'rs '17 1, 180,- contact 141,- circuit closer 139, Contact 140, through the conductor 181, through-v the coil of the magnet 131, through' the, conductor 182, to any one of the contacts 183 or 185, through the bridging'plate 193, throughany one ofthe contacts any one of the conductors189,190 tlirough" the conductor .191, back to the conductor 170 ivhich'is connected 'to the other side of the source-of electricallsupply. I v isthus seen, from the above description, that through themediui'n of the apparatus just ii'lescribedlit isinipossible to open any of the lzinding doors of the shattivay in which the elevator travelswithout first stopping the elevator at a certain'position with respect to the landing for which service is desired and that it is impossible to "start the elevator atterthe door has been open'ed'withQ out first properly closing that door. The op eration ofthe device is automatic and requires no further manijgiulation by the operator thanis necessary to operate the ordinary elevator controller, unless the operator fails and that when the circuit closer to stop'hiselevator iata prop'erlevel'wit'h 187, 18 8 and said elevator, I have resorted to certain safety devices which will hereafter be described in accordance with theillustrated' example.

From the hub 200 of the dog 135 I extend an arm 201 which carries'at its free end a knob or handle 202, which is only shown in dotted lines, and which projects through a curved slot 203 in the casing'enclosing the apparatus,

.or possibly through the controller casing.

By means of this arm 201 I may swing, manually, the dog 185 and 1n case the elevator stopped between landings, or in case the coil.

of the magnet 131 burns, I may manually swing the dog 135 out of the path of movement of the projection 121 andthereby ale low a starting of the elevator independently of the magnet 131. It is understood that this arm is only used for emergency purposes, and

only'in order to permit the operator to bring his elevator to a landing to let out his passengers or merchandise, after which the ap paratus can be repaired.

It may also occur that the winding or coil of the magnet 130 may burn out or 1t may occur that the circuitbreaker 151 gets out of substantially at right angles thereto, I extend an arm 211 which passes through an opening 212 extending transversely through the plunger 132. The outer end of saidlarm 211 projects through the casing enclosing the magnets or through the casing of the elevator controller and I protect the same by means of an outer box 213 which has a. glass front 214, and which is adapted to be broken by a hammer 215 when the operation of the arm 211 is desired. \Vhenthe glass air has been broken and theapparatus is to be rendered inoperative, the arm 211 is pushed downwardly (see 18 and 14%) until the said arm is engaged and held by the lower end of a spring latch 216 in which position it remains until so desired. Hence, upon the apparatus becoming inoperative the glass 214 is broken, the arm is pushed downwardly far enough to be engaged by the lower end of spring 216 which in sb doing forces the plunger 13s downwardly, causing the circuit closer 139 to permanently bridge the contacts 14-0 and 1411, and also causing the rod 23 to move downwardly far enough until it has moved the links 28 and 29 to that position in which the plate 3 1 is withdrawn from operation, as I shown in Figure 5, and in which the said plate normally lies when the elevator is travelling.

1 would state in conclusionthat while the illustrated example constitute practical embodiments of my invention, I donot limitmyself strictly to the exact details herein illustrated, since, manifestly, the same can be considerably varied without departure from the spirit of the invention as defined in the appended claims.

What I claim as my invention is r 1.. A safety device for elevators comprising an electro-magnet, a circuit therefor, a pivoted member for closing and opening said circuit, a suspended weight moved up and down by the handle of the elevator controller and adapted to said pivoted member to open or close saidcircuit, means actuated by said electro-magnet, and means associated with the doors of the shaftway landings in which the elevator travels engageable by said first-mentioned means for controlling the operation of said doors.

2. A safety device for elevators comprising an electro-magnet, an electricalcjrcuit therefor, a plunger and rod actuated by said magnet, a spring against which said plunger and rod move when the magnet is energized, means connected with said plunger and rod and moved thereby, a second means for controlling the operation of the landing doors of the shafti'ay of tlie'elevator, and'means actuated by the controller handle of the elevator for opening and closing said circuit to affect said magnet and therebyboth of said means. i

A safety device for elevators comprising an electro-magnet, an electrical circuit therefor, a circuit interrupter, a weight adapted to engage said interrupter to open the same, a flexible element suspending said weight, sheaves on whichsaid flexible element guided, a controller handle connected with said flexible element, said tlexil'ile clement and weight moving up and down as said controller handle is moved, and mean; actuated by said magnet for controlling the operation of the sha'ltway landing do rs andv of the elevator controller.

1. A safety device forelevators an electro-1nagnet, an electrical c ,1 int there for, a circuit breaker in said circuit, a spring actuated plunger in said magnet, a controller handle, means actuated by said controller handle engageable with sai d circuit breaker to open the same when the said controller handle brought toward a certain position, and means actuated by said plunger for control-- ling the operation of the landing doors of the elevator shaftway and the opcration of the elevator after one of said doors has been opened. 7 g g 5. A safety device for elevators comprising a magnet, an electrical circuit therefor, a'circuit breaker in said circuit, a plunger actuated by saidmagnet, a controller detaining member secured to and moved bysaid plunger, andautomatic means for moving said cir- *om prising magnet and thereby operate. said plunger and controller detaining member.

'6. A safety device for elevators comprising a controlling electrosmagnet, a circuit there for, a movable member for making or breakng said circuit, and means associated w th said clrcuit maker and breaker for moving the same out of the circuit when the shattway enclosure door adjacent which the elevator is stopped is in its open position.

7. A safety device for elevators comprising an electronnagnet, an electrical circuit therefor, means associated with said electromagnet and actuated thereby for controlling the operation of the elevator controller, a reciprocating element in with said circuit and means associated with said reciprocating elementadapted to be moved in resp nse to the operation of the enclosuredoors of the elevator shattway for moving said reciprocating element out of said circuit when one of said doors in its open position.

SQA safety device for elevators comprising a pair ofelectro-magnets, a circuit for each magnet, means operated by the controller handle of the elevator for breaking the circuit to one of said magneta'means actuated by the other magnet to hold said first-mentioned means in a position wherein said circuitis opened, and means actuated by the other magnet to open and close the circuit of the first magnet. V

9. A safety device for elevators comprising a pair of magnets, an electrical circuit for each magnet, means carried by the plunger ot one magnetto control'the' circuit of the other, means connected with said plunger for controlling the operation of the shattway enclosure doors and moving said first-men lioned means to a position breaking the circuit of said other magnet whenthe door for i which service is desired has been opened,

and means connected with the plunger of said other magnet to check the nioveinent of the,

elevator controller while said door is in its open position.

10. A safety device for elevatorslcoinprisa pair oi electro-magnets, a circuit tor each magnet, a weight, a controller handle for moving said weight, a projection on said weight, a pivoted detaining member actuated by one of said magnctsand adapted to engage said projection, and means actuated by the other magnet to control the opening oi: the elevator sha ttway enclosure doors, together with the circuit of the tirs't-mention'ed magnet to prevent a movement of the controller handle while the door tor which service is had is in its open position;

11. A safety device for elevators comprising a pair of electro-magnets, an individual electrical circuit for each magnet, a plunger actuated by each magnet, a spring acting against each plunger to urge the same in I for each magnet, oneof said one direction,means connected with one of said plungers for controlling the circuit'ot the magnet actuating the other plunger, and manually actuated means tor-controlling the circuit of the magnet actuating said firstmentionedplunger. i

12. Asat'ety device for elevators comprisinga pair of electro magnets, an electrical circuit for each magnet, a spring-urged plunger actuated by each magnet, means connected vat-h one of saidplungers adapted to engage and actuate the locking mechanism of the elevator shattwaysenclosure doors, means carried by one of the plungers for breaking the circuitot the magnet actuating the other plunger for the energizing of the magnet .ot the last-mentioned plunger when one of said landing doors is opened, manually operated n'icansfor breaking the circuit of the magnet actuatii'ig'said. first-mentioned plunger, and means actuated by the other plunger for detam ng said manually actuated meansin a certain position while the enclosure door is in its open position.

13. A safety device for elevators compris ing a pair of electro-magnets, an electrical c rcuit for each ,magnet, means assoclated with the plunger of one magnet to control the'circuitof the other, and means actuated by one of said magnets for controlling the operation of the enclosure doorsof the shaftway in which the elevator travels.

14. A safety device for elevators compris-- ing a pair of electro-magnets, an electrical circuit tor each magnet, means associated with the plunger of one magnet to control the CllCUlt of the other, and meansv actuated by one of said magnets for controlling the opperation of the enclosure doors of the shaftway in which the elevator-travels, together with means actuated by the other magnet for controlling the operation of the elevator con troller.

15, A safety device'tor elevators ing a pair of elect-ro-magnets, an electrical circuit. for each magnet, a circuit interrupter I v circuit interrupters being actuated by the plunger of one magnet, means associated with said plunger adapted to engage and operate in conjunction with the locking mechanism of the shattway enclosure doors in which the elevator travels, the other actuated by the handle of the elevator'controller, and means actuated by the'plunger of the other magnet for preventing tion of said controller handle While the enclosure door adjacent which the elevator is stopped isopenl' v 16. A safetydevice for elevators comprising a plurality of electrically operated means each provided with means to control the operation of the other, means associated with the enclosure doors of the elevator shaftway adaptedto control I i of said'circuit interrupters being the opera the operation of said elec- I compris iie &

trically operated means and of the elevator controller;

17. A safety device for elevators comprising spring-actiuited means, electro-magnets actuating said spring-actuated means, means connected with certain of said spring-actuated means for controlling the operation of the elevator controller and means associated with the otherspring-actuated means for {rolling the lock mechanism of the shaftway enclosure doors and the operation of said first-mentioned spring-actuated means.

18. A safety device for elevators comprising a pair of spring-actuated means, a rod associated with one of said spring-actuated means, a plate connected with said rod, means cngageable with. said plate for controlling the lock mechanism of the shaftway enclosure doors, magnets for actuating each of said s Jring-actuated means in opposition to their springs, an electrical circuit for each magnet, means carried by each spring-actuated means for controlling said springs so as to control the operation. of said enclosure doors and of the elevator.

19. A safety device for elevators comprising a weight moved up and down by the handle of the elevator controller, a springactnated detaining member for preventing the upward. movement of said weight when the controller handle has been brought to its neutral position, reciprocating and electrically-actuated means for withdrawing said spring-actuated means from said weight, and nieans associated with the lock mechanism of the shaft-way enclosure doors to operate said reciprocating and electrically-actuated means. 7

20. A safety device for elevators comprising a spring-actuated reciprocating rod extending through the floor of the elevator, a loelcbar associated with each shaftway enclosure ooor, means engaging the lower edge of said bar to prevent an opening of said doors, a reciprocating plate moved by said reciprocating rod adapted to engage eit er of said means and'to disengage the same om said bar to thereby allow an opening of either of said enclosuredoors only when the elevator has been stopped in that position where said plate engages either of said means.

21. A safetydevicefor elevators comprising a reciproeable loclr' bar associated with each sl'iaf'tway enclosure door, a pivot toothed member normally engaging said slidable bar to prevent an opening or said doors, spring and electrically-actuated means carried by the elevator and means connected with said pivot toothed member, and adapted to co-act with said spring and electrically-actuated means when the elevator has been stopped adj aeent either enclosure door, said means being moved by said spring and electrically-actuated means to disengage the slidable bar from the toothed member.

22. A-safety device for elevators comprising a reciprocatal'ile lockbar associated with each shaftway enclosure door, a pivot toothed member for each slidable bar and normally engaging the same, said toothed members being adapted to prevent an opening of said doors, spring and electrically-actuated means carried by the elevator, means connected with each of said pivot-toothed members and mlapted to co-act with said spring and. eleccarried by the elevator, means connected with each of said pivot toothed members and adapted to enact with said spring and electri'cally-actuated means when the elevator has been stopped adjacent either enclosure door, a dog member actuated by said spring and electrically-actuated means, areciproeating weight movedby the controller handle of the elevator, and means onthe reciprocating wei ht ada )ted to en a 'e said do meme: h t: 2') a her while the elevator is stopped.

ill. in a safety device of the class described, a reciprocating rod projecting through the floor of the elevator, a bracket secured to the floor of said elevator, a stub shaft mounted to reciprocate on said bracket, means between said rod and said stub shaft for transmitting the reciprocation of one to theother, a plate carried by said stub shaft, means arranged .with each shaftway enclosure door adapted to be engaged by said plate to release the locking mechanism of said doors.

25. In asafety device of the class described, a reciprocating rod projecting through the floor of the elevator, a bracket secured to the floor of said elevator, a stub shaft mounte to reciprocate on said bracket, means between said rod and said stub shaft for transmitting the reciprocation of one to the other, a plate carried by said stub shaft, means arranged with each shaftway enclosure door adapted to be engaged by said plate to release the looking mechanism of said doors and including a pivot bar, a cam plate carried by said pivot bar and adapted to be engaged by the plate carried by the stub shaft, a rockable bar locking member actuated by said pivot bar, and means on the elevator for reciprocating said stub shaft; I a

26. A safety device for elevators comprising a slidable rod, a spring for sliding said slidable rod in one direction, an electro-magnet for sliding said rod in the opposite dia plate carried by-said stub shaft, a door locking mechanism, actuating means for said door locking mechanism, said actuating means being actuated by the reciprocation of said stub shaft and means for preventing a reciprocation of said slidable bar and stub shaft when the elevator, while a shaftway enclosure door ad acent which the elevator has been stopped, is open. 5

27. In a safety device for elevators, a lock bar carried by each shaftway enclosure door, a tongue member secured to the lower end of said bar, a pivot bar engageable by said tongue member when the door is in a certain position, a plate carriedby' said pivot bar, a toothed member normally engaging said bar to prevent an opening of said door,means connecting said pivot bar with said toothed member to transmit the motion of one to the other and means carried by the elevator adapted to engage said'plate for moving said toothed member away from the lock. bar to permit an opening of said door.

28. In a safety device for elevators, a'loek bar carried by each shaftway enclosure door, a tongue member secured to the lower end of said bar, a pivot bar engageable by said tongue member when the door, is in a certain position, a plate carried by said pivot bar,

a toothed member normally engaging said barto prevent an opening of said door, means connecting said pivot bar with said toothed member to transmit the motion of one to the other, means carried by the elevator adapted to engage said plate for moving said toothed member away from the lock bar to permit an opening of said door, and a weight for returning said toothed member in engagement with said bar after the door'has been closed.

29. In a safety device for elevators, a bar carried by each shaftway enclosure door, a

tongue member secured to the lower end of said bar, a pivot bar engaged by said tongue member when the door is in a certain position, a plate carried by said pivot bar, a toothed memberformed with an oblong slot adjacent one end normally engaging said bar to prevent the opening of said door, means connecting said pivot bar with said toothed member to transmit the motion of one to the other, means carried by the elevator'adapted to engage said plate for moving said toothed member from the lock bar to permit an opening of said door, a weight element, a pin secured to said weight element and projecting within said slot in the toothed member, said weight being adapted to return said toothed member to its engaging position with the lock bar after the door has been closed.

30; In a safety device for elevators, a bar carrledby 'e'a'ch shaftway enclosure door, a

tongue member secured to the lower end of sa'idbar, a pivot bar engaged by said tongue member when the door is in a'certain position, a'plate carried by said pivot bar, a toothed member formed with an oblong slot adjacent one end normally engaging said bar to prevent the opening of said door,n1eans connectingsaidpivot bar with said toothed member to transmit the motion of oneto the other, means carried by the elevator a'dz-ipted to engage said plate formoving said toothed member from the lock bar to permit an opening of said door, a weight element, a pin sea cured to said weight element and projecting Within said slot in the toothed member,said weight being adapted to return said toothed member to its engaging'position withthe lock bar after thedoor has been closed, together with manually operatedmeans for moving said lock bar away from said toothed mem ber independently of the lock mechanism;

31. Ina safety device for elevators, a bar carried by each shaftway enclosure door, a tongue'm'ember secured to the lower end of said bar, a pivot bar engaged'by said tongue member when the door is in ZLCGl'lLftlH position, a plate carried by said pivot bar, a toothed member formed with an oblong slot adjacent one end normally engaging said bar to prevent the opening of said'door, means connecting said pivot bar with said toothed member to transmit the motionof one to the other, means carried by theelevator adapted toengage said plate for moving said toothed member from the lock bar to permit an opening of said door, a weight element, a pin secured to said weight element and pro ecting within said slot in the toothed member, said weight being adapted to return said toothed member to itsengaging position with the lock bar afterthe door has been closed, together with manually operatedmeans for moving said lock bar away from said toothed member independently of the lock mechanism, said manually operated means comprising a rod, a pivot'member formed with apair of collars, one of which accommodates one end of said rod-and means extended between said lock bar and the other collar of said pivot member for liftingsaid bar when said rod is reciprocated; I i

32. Ina safety device for elevators, a bar carried by each shaftway enclosure door, a tongue member secured to the lower end of said bar, a pivot bar engaged by said tongue member when the door is'in a certain position, a plate carried by said pivot bar, a

to engage said-plate for moving said toothed member from the lock bar to permit an opening oi said door, a weight element, a pin secured to said weight element and projecting within said slot in the toothed member, said weight being adapted to return said toothed member to its engaging position with the lock bar after the door has been closed, together with manually OPClltGCtIDQfiIIS for moving said lock bar away from said toothed member independently of the lock mechanism, said manually operated meanseomprising a rod, a pivot member formed with a pair of collars, one of which accommodates one. end ofsaid rod and means extended between said lock 'to nr 'e said toothed member and manuall actuated means for moving said lock bar from said toothed member.

34:. In a safety device for elevators, a lock bar carried by each shaftway enclosuredoor, a toothed member normally engaging said lock bar to prevent a lateral movement thereof and of the door,rmeans actuated by the controller of the elevator for disengaging said toothed member from the lock bar, a rod secured to said bar, a spring urging said bar to urge said toothed member, a head formed with a transversal slot secured at the upper end 01 said rod and manually actuated means insertable in said slot for lifting said rod from the toothed member, and manually actuated means for moving said lock bar from said toothed member.

35. In a safety device for elevators, a'locl: bar -arried by each shaitway enclosure door, a toothed member normally engaging said lock bar to prevent a lateral movement there- OLE and of the door. means actuated by the controller 01'' the elevator for disengaging said toothed member from the lock bar, a rod secured to said bar,,a spring urging said bar to urge said toothed member, a sleeve member formed with an annular flange at its upper end slidably enveloping the upper end of said rod and manually operated means for engaging said annular flange of the sleeve and lifting said sleevevand rod'so as to disengage said rod from the toothed member.

36. In a safety device of the character described, a pair of electro-magnets, a plunger actuated by each electro-magnet, a rod segmg said curedto one of the saidplungcrs, means asso-L ciated 'witl said rod for effecting the operation of the slia'i tway door locking mechanism, and manually actuated means for operating said last-mentioned plunger independently of its magnet. a

3'5. In a safety device of the character described, a pair of electro-magnets, a plunger actuated by 611011 magnet, means moved by the controller handle of the elevator, a dog member actuated by one of said magnets for preventing a movement of said means when the elevator is stopped, a rod secured to the other plunger, means associated with said rod adapted to effect the operation of the shaftway door locking mechanism, and manually actua ed means for moving said rod and dog member indepei'idently of said magnets.

2-38. Ina safety device of the character de-' scribed, a pair of electro-magnets, a plunger actuated by each n'iagnet, means moved by the controller handle-of the elevator, a doginember actuated one of said magnets "for pre venting a movement of said means when the elevator is stopped, a rodseeured to the other plunger, means associated with said rod adapted to eiiect the operation of the shaftvvay door locking mechanism, and manually actuated means for moving said rod and dog inei'i'iber independently of said magnets, together with a latch for holding said manually operated means in a position wherein said dog member does not engage said means moved by the controller handle.

39. A safety device for elevators comprising a door locking mechanism, means actuating said door locking mechanism for permitting an opening of the doors, an actuating device carried by the elevator and comprising a slidable rod, a slidablc stub shal't moved by the rod, a plate carried by said stub shaft for engaging and actuating said means actuating the door locking mechai'iisni, an electro-mag not, a plunger thereon, said'plunger being connected with said slidable rod, a spring urging said slidable rod in one direction so as to urge saidplunger upwardly of said ll'litll'r net when the same is deenergized, a second magnet, means carried by the plunger of the first magnet for breaking the circuit of the second magnet, 21 detaining dog actuated by the second magnet, a spring urging said detaining dog in one direction, a co troller handle and a weight associated with. said con-' troller handle and moved thereby, said weight being prevented from moving from its lowermost position whei'i the circuit of the second mentioned magnet is open.

40. A safety device for elevators comprising a door locking mechanism, means actuating said door locking mechanism for permitting an opening of the doors, an actuating device carried by theelevator and comprising a slidable rod, a slidable stub shaft moved by the rod, a plate carried by said stub shaft for engaging and actuating said means actuating the door locking mechanism, an electromagnet, a plunger thereon, said plunger being connected with said slidable rod, a spring urging said slidable rod in one direction so as to'urge said plunger upwardly of said magnet when the same is deenergized, a see- 0nd magnet, means carried by the plunger of the first magnet for breaking the circuit of the second magnet, a detaining dog actuated by the second magnet, a spring urging said detaining dog in one direction, a controller handle and a weight associated with said controller handle and moved thereby, said weight being prevented from moving from its lowerslidable rod, a slidable stub shaft moved by the rod, a plate carriedby said stub shaft for.

engaging and actuating said means actuating the door locking mechanism, an electromagnet, a plunger thereon, said plunger be ing connected with said slidable rod, a spring urging said slidable rod in one direction so as to urge said plunger upwardly of said magnet when't-he same is deenergized, a second magnet, means carried by the plunger of the first magnet for breaking the circuit of the second magnet, a detaining dog actuated by the second magnet, a spring urging said detaining dog in one direction, a controller handle and a weight associated with said controller handle and moved thereby, said weight being prevented from moving from its lowermost position when the circuit of the second mentioned magnet is open, together with manually actuated means for moving said plunger of the first mentioned magnet and said detaining dog independently of the magnets.

42. A safety device for elevators comprising a toothed member arranged adjacent the lower end of each shaftway enclosure door, a slidable bar carried by each door and adapted to engage the respective tooth member and means for moving either the toothed member away from the slidable bar or the slidable bar enclosure door.

away from the toothed member for permitting an opening of said door. I

as. A safety device for elevators comprising. a toothed member arranged adjacent'the lower end of each shaftway enclosure door, a slidable bar carried by each door and adapted .to engage the respective tooth member, key operated means for sliding said bars away from said toothed members so as to permit an opening of said doors.

44. A safety'device for elevators comprising a toothed member arranged adjacent the lower end of each shaftway enclosure door, a

slidable bar carried by each'door and adapted to engage the respective tooth member-sand means actuated by the controller handle of the elevator for moving either of said toothed members away from their respective slidable doors so as to 45. A safety device for elevators comprising a slidable bar projecting through the floor of the elevator, means for horizontally moving a plate carried by the elevator when said slidable bar is moved, a door locking mechanism associated with each shaftway enclosure door, means connected with each of said door locking mechanisms for engaging said plate, and means for manually sliding said slidable bar, said means comprising an arm extending; through the opening formed in said slidable rod and means connected with said arm for controlling the operation of the elevator controller while said arm is moved to a certain position.

46. A safety device for elevators comprising a slidable'bar projecting-through the floor of the elevator, means for horizontally moving a plate carried by, the elevator when said slidable bar is moved, a door locking mechanism associated with each shaftway enclosure door, means connected with each of said door locking mechanisms for engaging said plate, and means for manually sliding said slidable bar, said means comprising an arm extending through the opening formed in said slidable rod and means connected with said arm for controlling the operation of the elevator controller while said arm is moved to a certain position, together with a second arm associated with said last mentionedmeans for operating the same independently of said first mentioned arm.

In testimony whereof, I have signed my name to this specification this 25th day of June, 1926- THEODORE ESKILSSON.

permit an opening of either 

